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An astronaut weighs 152 N on the surface of the moon. If the same astronaut orbits the moon at an altitude equal to the moons radius, what gravitational force does the moon exert on him at this altitude?
A rotating fan completes 1000 revolutions every minute. Consider a point on the tip of a blade, at a radius of 0.11 m. What is the speed of the point
A 2.83-kg book slides 1.17 m along a level surface. The coefficient of kinetic friction between book and surface is0.41. Find the work done by friction
A long wire is known to have a radius greater than 4.0 mm and to carry a current that is uniformly distributed over its cross section. What is the radius of the wire
Let's say you measure t1/2 to be 0.0299 seconds and the resistance in the circuit is 108 Ohms. Then what is the capacitance in micro Farads
A man whose mass is 80kg on the earth's surface is in a spacecraft at a height of 2 Earth radii above the earth's surface. At that height what is the acceleration due to gravity
A student could either pull or push, at an angle of 30? from the horizontal, a 55kg crate on a horizontal surface, Calculate the minimum work required for both pulling and pushing
The primary coil of a transformer has N1 = 2.00 102 turns, and its secondary coil has N2 = 6.67 101 turns. what rms voltage is developed across the secondary coil
how long does it take the boat to make a round trip consisting.
A mass of 3kg, is sitting on a 34° incline and is connected by a massless string over a pulley in the shape of a hollow cylinder , what is the acceleration of the system
Two strings are adjusted to vibrate at exactly 188 Hz. Then the tension in one string is increased slightly. What is the new frequency of the string
A 0.156kg toy is undergoing SHM on the end of a horizontal spring with force constant 306 N/m. Find the maximum speed attained by the object during its motion
A high diver leaves the end of a 5.0 m high diving board and strikes the water 1.4 s later, 2.6 m beyond the end of the board. what is the angle with which she enters the water
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